Ozzy, you can get up to 6" copper couplers at http://www.pexsupply.com/Cello-WP0-32-2-CxC-Coupling-1193000-p
After seeing the demonstration on the Marantz, I bought a volt sensor. I have found it of very little use around the Synergistic Research charged cables. I did buy on 2" coupler nonetheless and found it did nothing on any of the SR charged pcs.
The copper couplers are merely shielding and charging the cables is a much superior technique.
I had thought of going into the SR pcs and painting with AVM as I have found painting the exterior of the Stealth Dream and Acoustic Revive Power Reference with this paint and got a substantial improvement. But I don't think there would have been much of an effect with charged power cords, especially given my experience noted above. I believe that AVM, aluminum foil, or copper sheeting bent to shape would all have the same effect. I have also found that the AVM paint has a vibration control benefit on wall outlets, in ics, and of course, within components on input, output, and ac cords.
After seeing the demonstration on the Marantz, I bought a volt sensor. I have found it of very little use around the Synergistic Research charged cables. I did buy on 2" coupler nonetheless and found it did nothing on any of the SR charged pcs.
The copper couplers are merely shielding and charging the cables is a much superior technique.
I had thought of going into the SR pcs and painting with AVM as I have found painting the exterior of the Stealth Dream and Acoustic Revive Power Reference with this paint and got a substantial improvement. But I don't think there would have been much of an effect with charged power cords, especially given my experience noted above. I believe that AVM, aluminum foil, or copper sheeting bent to shape would all have the same effect. I have also found that the AVM paint has a vibration control benefit on wall outlets, in ics, and of course, within components on input, output, and ac cords.